Barriers - Season 1 (1981)

In his final term at school Billy learns his birth father, Jerry Toff, defected to Britain in 1955 and married, then later divorced, a glass heiress. Along with Spike and other classmates he has a run-in with a local motorcycle gang.

An unannounced visit to his father's ex-wife in Scotland reveals that Billy has an older half-sister, Pamela. He learns little other than that his father and Charlotte met when he worked as a stable lad on her father's estate.

Billy seeks help to pursue his goal of becoming a professional flautist. Meanwhile, a runaway family take refuge in his seaside cottage.

Billy visits France where he learns more about his parents and helps his hosts' son fulfill a family tradition.

Spike, Billy's best friend from school, arrives unexpectedly. Billy offers to put him up for the night, causing friction between him and Mr Whitaker.

Frau Gruber sends Billy his father's ring, prompting him to return to Lake Chemsee to find out why. She will only tell him that it's dangerous for him to continue the search for his natural father.

Billy befriends a teenage runaway who stays the night with him at his seaside cottage. Meanwhile, Mr Whitaker receives an unexpected home visit from Pricey.

An unannounced visit by Mrs. Dalgleish, originally from Hungary but now the colourful and wealthy widow of a financial tycoon, affords a few more details about Billy's birth mother and father.

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In Salzburg to audition for a music scholarship, Billy finds himself followed by Hilda Gruber. Instructed to kill him, she chooses instead to tell him that it was his father who died fleeing Hungary, not Karl Gruber.